ZTTO Ultralight MTB HG Cassette 12S 276g-299g 11-46T 11-50T 11-51T Black-Silver CNC SLR3 12 Speed K7 Sprocket

ZTTO SLR Gen3 12s MTB 11-46T/11-50T/11-51T HG Cassette

HG Freehub Compatible

Compatible with mainstream 12 speed shifter.

Mechanical kits are easier to adjust, electronic kits may require fine-tuning using advanced customization features.

11-46T about 282g

11-50T about 295g

11-51T about 297g

Material: Maximum 3 gear of 7075 high-strength aluminum + the rest of high-strength steel

ZTTO Gen3 - The latest tooth shape

I would say this is the biggest upgrade ever, both in terms of smoothness and noise level. It is truly a comprehensive evolution to remain lightweight while still having excellent strength.

ZTTO Less than 299g ! The world's lightest mass-produced cassette challenge

As a comparison

M9101 376g ( 3 aluminum + 6 titanium + 3 steel)

10-51T=510%range

XG1299 370g (1 aluminum + 11 steel )

XS1299 350g (3 aluminum + 9 steel )

10-52T=520% range

ZTTO SLR Gen3 only 276g and 290g

11-46T=418% range

11-50T=455% range

11-51T=464% range

Available in various colors